Abstract
The purpose of the present study is to evaluate the color alteration and hydrogen peroxide trans-enamel and trans-dentinal penetration in bovine teeth, pigmented using black tea in different intensities. Firstly, the teeth will be analyzed and selected according to L* value, from the CIE L*a*b* color system. Afterwards, the specimens (N=80) will be divided into 4 groups (n=20) according t…